Severe steric effects at the reactive carbon would impede the substitution.大的立体效应阻止在碳上的取代.It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混....
It was intended to impede the apprehension of the person.它旨在妨碍对该人的拘押的.They also impede backmixing of sand.同时也可防止砂子的返混.At no time did I make an attempt to impede any investigatory effort.我绝没有试图妨碍过任何调查工作。Severe steric effe...
She doesn't rate high as a picker of husbands.就择夫选婿而论,她的眼力不怎么样.It was very sad when husbands and wives quarreled with each other.夫妻间争吵是很不幸的事.Husbands and wives of British nationals do not automatically gain citizens...
大多数巨蚓的生殖是正常异体受精.Most megadrile earthworms reproduce by normal cross - fertilization.异体间器官移植要特别注意排异反应.You should pay attention to rejection reactions when transplanting an alien organ.短期内, 那些变异体就会在以后的爆发中起主导地位.In short ord...
There is a scheme afoot to improve recreational facilities in the area.有一项改善本地区娱乐设施的计划正在进行。The town and its environs are inviting, with recreational attractions and art museums.那座小镇及其周边地区建有休闲胜地和艺术馆，很吸引人。...parks and othe...